Subtract 90/9 from 1/72
1st number: 1/72, 2nd number: 10 0/9
1/72 - 90/9 is -719/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
1/72 = 1 × 1/72 × 1 = 1/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
90/9 = 90 × 8/9 × 8 = 720/72 - Subtract the two like fractions:
1/72 - 720/72 = 1 - 720/72 = -719/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/72-90/9 1/72-90/18 3/72-90/9 1/72-90/27 5/72-90/9 1/72-90/45 7/72-90/9 1/72-90/63